[ https://issues.apache.org/jira/browse/HIVE-16803?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Chaoyu Tang updated HIVE-16803: ------------------------------- Attachment: HIVE-16803.patch Whether column stats need to be fetched and/or updated in alter table is based only on the column name/type between new and old columns, and not including column comment. > Alter table change column comment should not try to get column stats for > update > ------------------------------------------------------------------------------- > > Key: HIVE-16803 > URL: https://issues.apache.org/jira/browse/HIVE-16803 > Project: Hive > Issue Type: Bug > Components: Statistics > Reporter: Chaoyu Tang > Assignee: Chaoyu Tang > Priority: Minor > Attachments: HIVE-16803.patch > > > When running command like "alter table .. change .." (e.g. ALTER TABLE > testtbl CHANGE col col string COMMENT 'change column comment';) to change a > column's comment, Hive should not go to fetch the column stats for update > since the comment change does not affect table/partition column stats. -- This message was sent by Atlassian JIRA (v6.3.15#6346)